A highly preferred orientation of I-2-LiI(HPN)(2) film on the paper was found. The electrochemical property of a new flexible all-solid-state Li/I-2-LiI(HPN)(2) film paper battery was examined at wide temperatures for the first time. This paper battery is capable of achieving a high discharge energy of 250 Wh/kg with a plateau potential region at 2.70 V versus Li/Li+ at 70 degrees C. The interfacial layer of (LiI)((1+x))I(2-x) (HPN)(2) instead of Lil between lithium and I-2-LiI(HPN)(2) film should be responsible for the high electrochemical activity of the lithium-iodine paper battery. (C) 2014 Elsevier B.V. All rights reserved.